{
    "type": "record",
    "name": "nest",
    "fields" : [
        {"name": "booleantype", "type" : "boolean"},
        {"name": "longtype", "type": "long"},
        {"name": "doubletype", "type": "double"},
        {"name": "arraytype", "type": {
            "type": "array",
            "items": "long",
            "defalut": []
        }}
    ]
}
